ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.148 by root, Fri Apr 13 12:56:55 2007 UTC vs.
Revision 1.266 by root, Fri Nov 14 03:26:22 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
75/* 5.8.7 */ 101/* 5.8.7 */
76#ifndef SvRV_set 102#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 104#endif
79 105
… …
88/* prefer perl internal functions over our own? */ 114/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 115#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 117#endif
92 118
93/* The next macro should declare a variable stacklevel that contains and approximation 119/* The next macros try to return the current stack pointer, in an as
94 * to the current C stack pointer. Its property is that it changes with each call 120 * portable way as possible. */
95 * and should be unique. */
96#define dSTACKLEVEL int stacklevel 121#define dSTACKLEVEL volatile char stacklevel
97#define STACKLEVEL ((void *)&stacklevel) 122#define STACKLEVEL ((void *)&stacklevel)
98 123
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 124#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 125
101#if __GNUC__ >= 3 126#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 127# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 128# define expect(expr,value) __builtin_expect ((expr),(value))
129# define INLINE static inline
104#else 130#else
105# define attribute(x) 131# define attribute(x)
106# define BARRIER 132# define expect(expr,value) (expr)
133# define INLINE static
107#endif 134#endif
135
136#define expect_false(expr) expect ((expr) != 0, 0)
137#define expect_true(expr) expect ((expr) != 0, 1)
108 138
109#define NOINLINE attribute ((noinline)) 139#define NOINLINE attribute ((noinline))
110 140
111#include "CoroAPI.h" 141#include "CoroAPI.h"
112 142
113#ifdef USE_ITHREADS 143#ifdef USE_ITHREADS
144
114static perl_mutex coro_mutex; 145static perl_mutex coro_lock;
115# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
116# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD
149static void *coro_thx;
150# endif
151
117#else 152#else
153
118# define LOCK (void)0 154# define LOCK (void)0
119# define UNLOCK (void)0 155# define UNLOCK (void)0
156
120#endif 157#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
121 163
122/* helper storage struct for Coro::AIO */ 164/* helper storage struct for Coro::AIO */
123struct io_state 165struct io_state
124{ 166{
167 AV *res;
125 int errorno; 168 int errorno;
126 I32 laststype; 169 I32 laststype; /* U16 in 5.10.0 */
127 int laststatval; 170 int laststatval;
128 Stat_t statcache; 171 Stat_t statcache;
129}; 172};
130 173
174static double (*nvtime)(); /* so why doesn't it take void? */
175
176static U32 cctx_gen;
131static size_t coro_stacksize = CORO_STACKSIZE; 177static size_t cctx_stacksize = CORO_STACKSIZE;
132static struct CoroAPI coroapi; 178static struct CoroAPI coroapi;
133static AV *main_mainstack; /* used to differentiate between $main and others */ 179static AV *main_mainstack; /* used to differentiate between $main and others */
134static JMPENV *main_top_env; 180static JMPENV *main_top_env;
135static HV *coro_state_stash, *coro_stash; 181static HV *coro_state_stash, *coro_stash;
136static SV *coro_mortal; /* will be freed after next transfer */ 182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184
185struct transfer_args
186{
187 struct coro *prev, *next;
188};
189
190static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook;
193static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */
195
196/* async_pool helper stuff */
197static SV *sv_pool_rss;
198static SV *sv_pool_size;
199static AV *av_async_pool;
200
201/* Coro::AnyEvent */
202static SV *sv_activity;
137 203
138static struct coro_cctx *cctx_first; 204static struct coro_cctx *cctx_first;
139static int cctx_count, cctx_idle; 205static int cctx_count, cctx_idle;
206
207enum {
208 CC_MAPPED = 0x01,
209 CC_NOREUSE = 0x02, /* throw this away after tracing */
210 CC_TRACE = 0x04,
211 CC_TRACE_SUB = 0x08, /* trace sub calls */
212 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214};
140 215
141/* this is a structure representing a c-level coroutine */ 216/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 217typedef struct coro_cctx {
143 struct coro_cctx *next; 218 struct coro_cctx *next;
144 219
… …
150 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 225 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
151 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 226 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
152 JMPENV *top_env; 227 JMPENV *top_env;
153 coro_context cctx; 228 coro_context cctx;
154 229
230 U32 gen;
155#if CORO_USE_VALGRIND 231#if CORO_USE_VALGRIND
156 int valgrind_id; 232 int valgrind_id;
157#endif 233#endif
158 char inuse, mapped; 234 unsigned char flags;
159} coro_cctx; 235} coro_cctx;
160 236
161enum { 237enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
164 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
165 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166}; 242};
167 243
244/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct {
246 SV *defsv;
247 AV *defav;
248 SV *errsv;
249 SV *irsgv;
250#define VAR(name,type) type name;
251# include "state.h"
252#undef VAR
253} perl_slots;
254
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256
168/* this is a structure representing a perl-level coroutine */ 257/* this is a structure representing a perl-level coroutine */
169struct coro { 258struct coro {
170 /* the c coroutine allocated to this perl coroutine, if any */ 259 /* the c coroutine allocated to this perl coroutine, if any */
171 coro_cctx *cctx; 260 coro_cctx *cctx;
172 261
262 /* process data */
263 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */
265
173 /* data associated with this coroutine (initial args) */ 266 AV *args; /* data associated with this coroutine (initial args) */
174 AV *args; 267 int refcnt; /* coroutines are refcounted, yes */
175 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */ 268 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */
178 270
179 /* optionally saved, might be zero */ 271 /* statistics */
180 AV *defav; /* @_ */ 272 int usecount; /* number of transfers to this coro */
181 SV *defsv; /* $_ */
182 SV *errsv; /* $@ */
183 GV *deffh; /* default filehandle */
184 SV *irssv; /* $/ */
185 SV *irssv_sv; /* real $/ cache */
186
187#define VAR(name,type) type name;
188# include "state.h"
189#undef VAR
190 273
191 /* coro process data */ 274 /* coro process data */
192 int prio; 275 int prio;
276 SV *throw; /* exception to be thrown */
277
278 /* async_pool */
279 SV *saved_deffh;
280
281 /* linked list */
282 struct coro *next, *prev;
193}; 283};
194 284
195typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
196typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
197 287
… …
204#define PRIO_IDLE -3 294#define PRIO_IDLE -3
205#define PRIO_MIN -4 295#define PRIO_MIN -4
206 296
207/* for Coro.pm */ 297/* for Coro.pm */
208static SV *coro_current; 298static SV *coro_current;
299static SV *coro_readyhook;
209static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
210static int coro_nready; 301static int coro_nready;
302static struct coro *coro_first;
211 303
212/** lowlevel stuff **********************************************************/ 304/** lowlevel stuff **********************************************************/
305
306static SV *
307coro_get_sv (pTHX_ const char *name, int create)
308{
309#if PERL_VERSION_ATLEAST (5,10,0)
310 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
311 get_sv (name, create);
312#endif
313 return get_sv (name, create);
314}
315
316static AV *
317coro_get_av (pTHX_ const char *name, int create)
318{
319#if PERL_VERSION_ATLEAST (5,10,0)
320 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
321 get_av (name, create);
322#endif
323 return get_av (name, create);
324}
325
326static HV *
327coro_get_hv (pTHX_ const char *name, int create)
328{
329#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create);
332#endif
333 return get_hv (name, create);
334}
213 335
214static AV * 336static AV *
215coro_clone_padlist (pTHX_ CV *cv) 337coro_clone_padlist (pTHX_ CV *cv)
216{ 338{
217 AV *padlist = CvPADLIST (cv); 339 AV *padlist = CvPADLIST (cv);
218 AV *newpadlist, *newpad; 340 AV *newpadlist, *newpad;
219 341
220 newpadlist = newAV (); 342 newpadlist = newAV ();
221 AvREAL_off (newpadlist); 343 AvREAL_off (newpadlist);
222#if PERL_VERSION_ATLEAST (5,9,0) 344#if PERL_VERSION_ATLEAST (5,10,0)
223 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 345 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
224#else 346#else
225 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
226#endif 348#endif
227 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
228 --AvFILLp (padlist); 350 --AvFILLp (padlist);
229 351
230 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
231 av_store (newpadlist, 1, (SV *)newpad); 353 av_store (newpadlist, 1, (SV *)newpad);
232 354
233 return newpadlist; 355 return newpadlist;
234} 356}
235 357
… …
265 387
266 /* casting is fun. */ 388 /* casting is fun. */
267 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 389 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
268 free_padlist (aTHX_ padlist); 390 free_padlist (aTHX_ padlist);
269 391
270 SvREFCNT_dec (av); 392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
271 393
272 return 0; 394 return 0;
273} 395}
274 396
275#define PERL_MAGIC_coro PERL_MAGIC_ext 397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
276 399
277static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 400static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0,
402 coro_cv_free
403};
278 404
279#define CORO_MAGIC(cv) \ 405#define CORO_MAGIC(sv, type) \
280 SvMAGIC (cv) \ 406 SvMAGIC (sv) \
281 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 407 ? SvMAGIC (sv)->mg_type == type \
282 ? SvMAGIC (cv) \ 408 ? SvMAGIC (sv) \
283 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 409 : mg_find (sv, type) \
284 : 0 410 : 0
411
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
285 440
286/* the next two functions merely cache the padlists */ 441/* the next two functions merely cache the padlists */
287static void 442static void
288get_padlist (pTHX_ CV *cv) 443get_padlist (pTHX_ CV *cv)
289{ 444{
290 MAGIC *mg = CORO_MAGIC (cv); 445 MAGIC *mg = CORO_MAGIC_cv (cv);
291 AV *av; 446 AV *av;
292 447
293 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 448 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
294 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 449 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
295 else 450 else
296 { 451 {
297#if CORO_PREFER_PERL_FUNCTIONS 452#if CORO_PREFER_PERL_FUNCTIONS
298 /* this is probably cleaner, but also slower? */ 453 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */
299 CV *cp = Perl_cv_clone (cv); 455 CV *cp = Perl_cv_clone (cv);
300 CvPADLIST (cv) = CvPADLIST (cp); 456 CvPADLIST (cv) = CvPADLIST (cp);
301 CvPADLIST (cp) = 0; 457 CvPADLIST (cp) = 0;
302 SvREFCNT_dec (cp); 458 SvREFCNT_dec (cp);
303#else 459#else
… …
307} 463}
308 464
309static void 465static void
310put_padlist (pTHX_ CV *cv) 466put_padlist (pTHX_ CV *cv)
311{ 467{
312 MAGIC *mg = CORO_MAGIC (cv); 468 MAGIC *mg = CORO_MAGIC_cv (cv);
313 AV *av; 469 AV *av;
314 470
315 if (!mg) 471 if (expect_false (!mg))
316 { 472 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
317 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
318 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
319 mg->mg_virtual = &vtbl_coro;
320 mg->mg_obj = (SV *)newAV ();
321 }
322 473
323 av = (AV *)mg->mg_obj; 474 av = (AV *)mg->mg_obj;
324 475
325 if (AvFILLp (av) >= AvMAX (av)) 476 if (expect_false (AvFILLp (av) >= AvMAX (av)))
326 av_extend (av, AvMAX (av) + 1); 477 av_extend (av, AvMAX (av) + 1);
327 478
328 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
329} 480}
330 481
331/** load & save, init *******************************************************/ 482/** load & save, init *******************************************************/
332
333#define SB do {
334#define SE } while (0)
335
336#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
337 483
338static void 484static void
339load_perl (pTHX_ Coro__State c) 485load_perl (pTHX_ Coro__State c)
340{ 486{
487 perl_slots *slot = c->slot;
488 c->slot = 0;
489
490 PL_mainstack = c->mainstack;
491
492 GvSV (PL_defgv) = slot->defsv;
493 GvAV (PL_defgv) = slot->defav;
494 GvSV (PL_errgv) = slot->errsv;
495 GvSV (irsgv) = slot->irsgv;
496
341#define VAR(name,type) PL_ ## name = c->name; 497 #define VAR(name,type) PL_ ## name = slot->name;
342# include "state.h" 498 # include "state.h"
343#undef VAR 499 #undef VAR
344
345 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
346 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
347 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
348 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
349
350 if (c->irssv)
351 {
352 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
353 {
354 SvREFCNT_dec (c->irssv);
355 c->irssv = 0;
356 }
357 else
358 {
359 REPLACE_SV (PL_rs, c->irssv);
360 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
361 sv_setsv (c->irssv_sv, PL_rs);
362 }
363 }
364 500
365 { 501 {
366 dSP; 502 dSP;
503
367 CV *cv; 504 CV *cv;
368 505
369 /* now do the ugly restore mess */ 506 /* now do the ugly restore mess */
370 while ((cv = (CV *)POPs)) 507 while (expect_true (cv = (CV *)POPs))
371 { 508 {
372 put_padlist (aTHX_ cv); /* mark this padlist as available */ 509 put_padlist (aTHX_ cv); /* mark this padlist as available */
373 CvDEPTH (cv) = PTR2IV (POPs); 510 CvDEPTH (cv) = PTR2IV (POPs);
374 CvPADLIST (cv) = (AV *)POPs; 511 CvPADLIST (cv) = (AV *)POPs;
375 } 512 }
376 513
377 PUTBACK; 514 PUTBACK;
378 } 515 }
379 assert (!PL_comppad || AvARRAY (PL_comppad));//D
380} 516}
381 517
382static void 518static void
383save_perl (pTHX_ Coro__State c) 519save_perl (pTHX_ Coro__State c)
384{ 520{
385 assert (!PL_comppad || AvARRAY (PL_comppad));//D
386 { 521 {
387 dSP; 522 dSP;
388 I32 cxix = cxstack_ix; 523 I32 cxix = cxstack_ix;
389 PERL_CONTEXT *ccstk = cxstack; 524 PERL_CONTEXT *ccstk = cxstack;
390 PERL_SI *top_si = PL_curstackinfo; 525 PERL_SI *top_si = PL_curstackinfo;
… …
392 /* 527 /*
393 * the worst thing you can imagine happens first - we have to save 528 * the worst thing you can imagine happens first - we have to save
394 * (and reinitialize) all cv's in the whole callchain :( 529 * (and reinitialize) all cv's in the whole callchain :(
395 */ 530 */
396 531
397 EXTEND (SP, 3 + 1);
398 PUSHs (Nullsv); 532 XPUSHs (Nullsv);
399 /* this loop was inspired by pp_caller */ 533 /* this loop was inspired by pp_caller */
400 for (;;) 534 for (;;)
401 { 535 {
402 while (cxix >= 0) 536 while (expect_true (cxix >= 0))
403 { 537 {
404 PERL_CONTEXT *cx = &ccstk[cxix--]; 538 PERL_CONTEXT *cx = &ccstk[cxix--];
405 539
406 if (CxTYPE (cx) == CXt_SUB) 540 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
407 { 541 {
408 CV *cv = cx->blk_sub.cv; 542 CV *cv = cx->blk_sub.cv;
409 543
410 if (CvDEPTH (cv)) 544 if (expect_true (CvDEPTH (cv)))
411 { 545 {
412 EXTEND (SP, 3); 546 EXTEND (SP, 3);
413 PUSHs ((SV *)CvPADLIST (cv)); 547 PUSHs ((SV *)CvPADLIST (cv));
414 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 548 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
415 PUSHs ((SV *)cv); 549 PUSHs ((SV *)cv);
416 550
417 CvDEPTH (cv) = 0; 551 CvDEPTH (cv) = 0;
418 get_padlist (aTHX_ cv); 552 get_padlist (aTHX_ cv);
419 } 553 }
420 } 554 }
421 } 555 }
422 556
423 if (top_si->si_type == PERLSI_MAIN) 557 if (expect_true (top_si->si_type == PERLSI_MAIN))
424 break; 558 break;
425 559
426 top_si = top_si->si_prev; 560 top_si = top_si->si_prev;
427 ccstk = top_si->si_cxstack; 561 ccstk = top_si->si_cxstack;
428 cxix = top_si->si_cxix; 562 cxix = top_si->si_cxix;
429 } 563 }
430 564
431 PUTBACK; 565 PUTBACK;
432 } 566 }
433 567
434 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 568 /* allocate some space on the context stack for our purposes */
435 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 569 /* we manually unroll here, as usually 2 slots is enough */
436 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 570 if (SLOT_COUNT >= 1) CXINC;
437 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 571 if (SLOT_COUNT >= 2) CXINC;
438 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 572 if (SLOT_COUNT >= 3) CXINC;
573 {
574 int i;
575 for (i = 3; i < SLOT_COUNT; ++i)
576 CXINC;
577 }
578 cxstack_ix -= SLOT_COUNT; /* undo allocation */
439 579
580 c->mainstack = PL_mainstack;
581
582 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584
585 slot->defav = GvAV (PL_defgv);
586 slot->defsv = DEFSV;
587 slot->errsv = ERRSV;
588 slot->irsgv = GvSV (irsgv);
589
440#define VAR(name,type)c->name = PL_ ## name; 590 #define VAR(name,type) slot->name = PL_ ## name;
441# include "state.h" 591 # include "state.h"
442#undef VAR 592 #undef VAR
593 }
443} 594}
444 595
445/* 596/*
446 * allocate various perl stacks. This is an exact copy 597 * allocate various perl stacks. This is an exact copy
447 * of perl.c:init_stacks, except that it uses less memory 598 * of perl.c:init_stacks, except that it uses less memory
… …
452# define coro_init_stacks init_stacks 603# define coro_init_stacks init_stacks
453#else 604#else
454static void 605static void
455coro_init_stacks (pTHX) 606coro_init_stacks (pTHX)
456{ 607{
457 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 608 PL_curstackinfo = new_stackinfo(32, 8);
458 PL_curstackinfo->si_type = PERLSI_MAIN; 609 PL_curstackinfo->si_type = PERLSI_MAIN;
459 PL_curstack = PL_curstackinfo->si_stack; 610 PL_curstack = PL_curstackinfo->si_stack;
460 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 611 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
461 612
462 PL_stack_base = AvARRAY(PL_curstack); 613 PL_stack_base = AvARRAY(PL_curstack);
463 PL_stack_sp = PL_stack_base; 614 PL_stack_sp = PL_stack_base;
464 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 615 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
465 616
466 New(50,PL_tmps_stack,128,SV*); 617 New(50,PL_tmps_stack,32,SV*);
467 PL_tmps_floor = -1; 618 PL_tmps_floor = -1;
468 PL_tmps_ix = -1; 619 PL_tmps_ix = -1;
469 PL_tmps_max = 128; 620 PL_tmps_max = 32;
470 621
471 New(54,PL_markstack,32,I32); 622 New(54,PL_markstack,16,I32);
472 PL_markstack_ptr = PL_markstack; 623 PL_markstack_ptr = PL_markstack;
473 PL_markstack_max = PL_markstack + 32; 624 PL_markstack_max = PL_markstack + 16;
474 625
475#ifdef SET_MARK_OFFSET 626#ifdef SET_MARK_OFFSET
476 SET_MARK_OFFSET; 627 SET_MARK_OFFSET;
477#endif 628#endif
478 629
479 New(54,PL_scopestack,32,I32); 630 New(54,PL_scopestack,8,I32);
480 PL_scopestack_ix = 0; 631 PL_scopestack_ix = 0;
481 PL_scopestack_max = 32; 632 PL_scopestack_max = 8;
482 633
483 New(54,PL_savestack,64,ANY); 634 New(54,PL_savestack,24,ANY);
484 PL_savestack_ix = 0; 635 PL_savestack_ix = 0;
485 PL_savestack_max = 64; 636 PL_savestack_max = 24;
486 637
487#if !PERL_VERSION_ATLEAST (5,9,0) 638#if !PERL_VERSION_ATLEAST (5,10,0)
488 New(54,PL_retstack,16,OP*); 639 New(54,PL_retstack,4,OP*);
489 PL_retstack_ix = 0; 640 PL_retstack_ix = 0;
490 PL_retstack_max = 16; 641 PL_retstack_max = 4;
491#endif 642#endif
492} 643}
493#endif 644#endif
494 645
495/* 646/*
496 * destroy the stacks, the callchain etc... 647 * destroy the stacks, the callchain etc...
497 */ 648 */
498static void 649static void
499coro_destroy_stacks (pTHX) 650coro_destruct_stacks (pTHX)
500{ 651{
501 if (!IN_DESTRUCT)
502 {
503 /* restore all saved variables and stuff */
504 LEAVE_SCOPE (0);
505 assert (PL_tmps_floor == -1);
506
507 /* free all temporaries */
508 FREETMPS;
509 assert (PL_tmps_ix == -1);
510
511 /* unwind all extra stacks */
512 POPSTACK_TO (PL_mainstack);
513
514 /* unwind main stack */
515 dounwind (-1);
516 }
517
518 while (PL_curstackinfo->si_next) 652 while (PL_curstackinfo->si_next)
519 PL_curstackinfo = PL_curstackinfo->si_next; 653 PL_curstackinfo = PL_curstackinfo->si_next;
520 654
521 while (PL_curstackinfo) 655 while (PL_curstackinfo)
522 { 656 {
… …
532 666
533 Safefree (PL_tmps_stack); 667 Safefree (PL_tmps_stack);
534 Safefree (PL_markstack); 668 Safefree (PL_markstack);
535 Safefree (PL_scopestack); 669 Safefree (PL_scopestack);
536 Safefree (PL_savestack); 670 Safefree (PL_savestack);
537#if !PERL_VERSION_ATLEAST (5,9,0) 671#if !PERL_VERSION_ATLEAST (5,10,0)
538 Safefree (PL_retstack); 672 Safefree (PL_retstack);
539#endif 673#endif
540} 674}
541 675
676static size_t
677coro_rss (pTHX_ struct coro *coro)
678{
679 size_t rss = sizeof (*coro);
680
681 if (coro->mainstack)
682 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING)
687 {
688 slot = &tmp_slot;
689
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR
693 }
694 else
695 slot = coro->slot;
696
697 if (slot)
698 {
699 rss += sizeof (slot->curstackinfo);
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 }
711 }
712
713 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741}
742
542/** coroutine stack handling ************************************************/ 743/** coroutine stack handling ************************************************/
543 744
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
746static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
747static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
748
749/* apparently < 5.8.8 */
750#ifndef MgPV_nolen_const
751#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
752 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
753 (const char*)(mg)->mg_ptr)
754#endif
755
756/*
757 * This overrides the default magic get method of %SIG elements.
758 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
759 * and instead of tryign to save and restore the hash elements, we just provide
760 * readback here.
761 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
762 * not expecting this to actually change the hook. This is a potential problem
763 * when a schedule happens then, but we ignore this.
764 */
765static int
766coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
767{
768 const char *s = MgPV_nolen_const (mg);
769
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
780 return 0;
781 }
782 }
783
784 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
785}
786
787static int
788coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
789{
790 const char *s = MgPV_nolen_const (mg);
791
792 if (*s == '_')
793 {
794 SV **svp = 0;
795
796 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
797 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
798
799 if (svp)
800 {
801 SV *old = *svp;
802 *svp = 0;
803 SvREFCNT_dec (old);
804 return 0;
805 }
806 }
807
808 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
809}
810
811static int
812coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
813{
814 const char *s = MgPV_nolen_const (mg);
815
816 if (*s == '_')
817 {
818 SV **svp = 0;
819
820 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
821 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
822
823 if (svp)
824 {
825 SV *old = *svp;
826 *svp = newSVsv (sv);
827 SvREFCNT_dec (old);
828 return 0;
829 }
830 }
831
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833}
834
544static void 835static void
545setup_coro (pTHX_ struct coro *coro) 836coro_setup (pTHX_ struct coro *coro)
546{ 837{
547 /* 838 /*
548 * emulate part of the perl startup here. 839 * emulate part of the perl startup here.
549 */ 840 */
550 coro_init_stacks (aTHX); 841 coro_init_stacks (aTHX);
551 842
843 PL_runops = RUNOPS_DEFAULT;
552 PL_curcop = &PL_compiling; 844 PL_curcop = &PL_compiling;
553 PL_in_eval = EVAL_NULL; 845 PL_in_eval = EVAL_NULL;
554 PL_comppad = 0; 846 PL_comppad = 0;
555 PL_curpm = 0; 847 PL_curpm = 0;
848 PL_curpad = 0;
556 PL_localizing = 0; 849 PL_localizing = 0;
557 PL_dirty = 0; 850 PL_dirty = 0;
558 PL_restartop = 0; 851 PL_restartop = 0;
852#if PERL_VERSION_ATLEAST (5,10,0)
853 PL_parser = 0;
854#endif
855
856 /* recreate the die/warn hooks */
857 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
858 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
859
860 GvSV (PL_defgv) = newSV (0);
861 GvAV (PL_defgv) = coro->args; coro->args = 0;
862 GvSV (PL_errgv) = newSV (0);
863 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
864 PL_rs = newSVsv (GvSV (irsgv));
865 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
559 866
560 { 867 {
561 dSP; 868 dSP;
562 LOGOP myop; 869 UNOP myop;
563 870
564 SvREFCNT_dec (GvAV (PL_defgv));
565 GvAV (PL_defgv) = coro->args; coro->args = 0;
566
567 Zero (&myop, 1, LOGOP); 871 Zero (&myop, 1, UNOP);
568 myop.op_next = Nullop; 872 myop.op_next = Nullop;
569 myop.op_flags = OPf_WANT_VOID; 873 myop.op_flags = OPf_WANT_VOID;
570 874
571 PUSHMARK (SP); 875 PUSHMARK (SP);
572 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
573 PUTBACK; 877 PUTBACK;
574 PL_op = (OP *)&myop; 878 PL_op = (OP *)&myop;
575 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
576 SPAGAIN; 880 SPAGAIN;
577 } 881 }
578 882
579 ENTER; /* necessary e.g. for dounwind */ 883 /* this newly created coroutine might be run on an existing cctx which most
884 * likely was suspended in set_stacklevel, called from pp_set_stacklevel,
885 * so we have to emulate entering pp_set_stacklevel here.
886 */
887 SSL_HEAD;
580} 888}
581 889
582static void 890static void
891coro_destruct (pTHX_ struct coro *coro)
892{
893 if (!IN_DESTRUCT)
894 {
895 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0);
897 assert (PL_tmps_floor == -1);
898
899 /* free all temporaries */
900 FREETMPS;
901 assert (PL_tmps_ix == -1);
902
903 /* unwind all extra stacks */
904 POPSTACK_TO (PL_mainstack);
905
906 /* unwind main stack */
907 dounwind (-1);
908 }
909
910 SvREFCNT_dec (GvSV (PL_defgv));
911 SvREFCNT_dec (GvAV (PL_defgv));
912 SvREFCNT_dec (GvSV (PL_errgv));
913 SvREFCNT_dec (PL_defoutgv);
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919
920 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw);
922
923 coro_destruct_stacks (aTHX);
924}
925
926INLINE void
583free_coro_mortal (pTHX) 927free_coro_mortal (pTHX)
584{ 928{
585 if (coro_mortal) 929 if (expect_true (coro_mortal))
586 { 930 {
587 SvREFCNT_dec (coro_mortal); 931 SvREFCNT_dec (coro_mortal);
588 coro_mortal = 0; 932 coro_mortal = 0;
589 } 933 }
590} 934}
591 935
936static int
937runops_trace (pTHX)
938{
939 COP *oldcop = 0;
940 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 {
946 PERL_ASYNC_CHECK ();
947
948 if (cctx->flags & CC_TRACE_ALL)
949 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
951 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top;
954 AV *av = newAV (); /* return values */
955 SV **cb;
956 dSP;
957
958 GV *gv = CvGV (cx->blk_sub.cv);
959 SV *fullname = sv_2mortal (newSV (0));
960 if (isGV (gv))
961 gv_efullname3 (fullname, gv, 0);
962
963 bot = PL_stack_base + cx->blk_oldsp + 1;
964 top = cx->blk_gimme == G_ARRAY ? SP + 1
965 : cx->blk_gimme == G_SCALAR ? bot + 1
966 : bot;
967
968 av_extend (av, top - bot);
969 while (bot < top)
970 av_push (av, SvREFCNT_inc_NN (*bot++));
971
972 PL_runops = RUNOPS_DEFAULT;
973 ENTER;
974 SAVETMPS;
975 EXTEND (SP, 3);
976 PUSHMARK (SP);
977 PUSHs (&PL_sv_no);
978 PUSHs (fullname);
979 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
980 PUTBACK;
981 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
982 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
983 SPAGAIN;
984 FREETMPS;
985 LEAVE;
986 PL_runops = runops_trace;
987 }
988
989 if (oldcop != PL_curcop)
990 {
991 oldcop = PL_curcop;
992
993 if (PL_curcop != &PL_compiling)
994 {
995 SV **cb;
996
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
998 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0));
1007
1008 if (isGV (gv))
1009 gv_efullname3 (fullname, gv, 0);
1010
1011 PL_runops = RUNOPS_DEFAULT;
1012 ENTER;
1013 SAVETMPS;
1014 EXTEND (SP, 3);
1015 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN;
1023 FREETMPS;
1024 LEAVE;
1025 PL_runops = runops_trace;
1026 }
1027
1028 oldcxix = cxstack_ix;
1029 }
1030
1031 if (cctx->flags & CC_TRACE_LINE)
1032 {
1033 dSP;
1034
1035 PL_runops = RUNOPS_DEFAULT;
1036 ENTER;
1037 SAVETMPS;
1038 EXTEND (SP, 3);
1039 PL_runops = RUNOPS_DEFAULT;
1040 PUSHMARK (SP);
1041 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1042 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1043 PUTBACK;
1044 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1045 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1046 SPAGAIN;
1047 FREETMPS;
1048 LEAVE;
1049 PL_runops = runops_trace;
1050 }
1051 }
1052 }
1053 }
1054 }
1055
1056 TAINT_NOT;
1057 return 0;
1058}
1059
1060static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
1062{
1063 ta->prev = (struct coro *)cctx;
1064 ta->next = 0;
1065}
1066
592/* inject a fake call to Coro::State::_cctx_init into the execution */ 1067/* inject a fake call to Coro::State::_cctx_init into the execution */
593/* _cctx_init shoukld be careful, as it could be called at almost any time */ 1068/* _cctx_init should be careful, as it could be called at almost any time */
594/* during execution of a pelr program */ 1069/* during execution of a perl program */
1070/* also initialises PL_top_env */
595static void NOINLINE 1071static void NOINLINE
596prepare_cctx (pTHX_ coro_cctx *cctx) 1072cctx_prepare (pTHX_ coro_cctx *cctx)
597{ 1073{
598 dSP; 1074 dSP;
599 LOGOP myop; 1075 UNOP myop;
600 1076
1077 PL_top_env = &PL_start_env;
1078
1079 if (cctx->flags & CC_TRACE)
1080 PL_runops = runops_trace;
1081
601 Zero (&myop, 1, LOGOP); 1082 Zero (&myop, 1, UNOP);
602 myop.op_next = PL_op; 1083 myop.op_next = PL_op;
603 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1084 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
604 1085
605 PUSHMARK (SP); 1086 PUSHMARK (SP);
606 EXTEND (SP, 2); 1087 EXTEND (SP, 2);
607 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1088 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
608 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
609 PUTBACK; 1090 PUTBACK;
610 PL_op = (OP *)&myop; 1091 PL_op = (OP *)&myop;
611 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
612 SPAGAIN; 1093 SPAGAIN;
613} 1094}
614 1095
1096/* the tail of transfer: execute stuff we can only do after a transfer */
1097INLINE void
1098transfer_tail (pTHX)
1099{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX);
1105 UNLOCK;
1106
1107 if (expect_false (next->throw))
1108 {
1109 SV *exception = sv_2mortal (next->throw);
1110
1111 next->throw = 0;
1112 sv_setsv (ERRSV, exception);
1113 croak (0);
1114 }
1115}
1116
615/* 1117/*
616 * this is a _very_ stripped down perl interpreter ;) 1118 * this is a _very_ stripped down perl interpreter ;)
617 */ 1119 */
618static void 1120static void
619coro_run (void *arg) 1121cctx_run (void *arg)
620{ 1122{
1123#ifdef USE_ITHREADS
1124# if CORO_PTHREAD
1125 PERL_SET_CONTEXT (coro_thx);
1126# endif
1127#endif
1128 {
621 dTHX; 1129 dTHX;
622 1130
623 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1131 /* we are the alternative tail to pp_set_stacklevel */
624 UNLOCK; 1132 /* so do the same things here */
1133 SSL_TAIL;
625 1134
626 PL_top_env = &PL_start_env; 1135 /* we now skip the op that did lead to transfer() */
1136 PL_op = PL_op->op_next;
627 1137
628 /* inject a fake subroutine call to cctx_init */ 1138 /* inject a fake subroutine call to cctx_init */
629 prepare_cctx (aTHX_ (coro_cctx *)arg); 1139 cctx_prepare (aTHX_ (coro_cctx *)arg);
630 1140
1141 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX);
1143
631 /* somebody or something will hit me for both perl_run and PL_restartop */ 1144 /* somebody or something will hit me for both perl_run and PL_restartop */
632 PL_restartop = PL_op; 1145 PL_restartop = PL_op;
633 perl_run (PL_curinterp); 1146 perl_run (PL_curinterp);
634 1147
1148 /*
635 /* If perl-run returns we assume exit() was being called, which */ 1149 * If perl-run returns we assume exit() was being called or the coro
636 /* seems to be the only valid (non-bug) reason for perl_run to return. */ 1150 * fell off the end, which seems to be the only valid (non-bug)
637 /* We try to exit by jumping to the bootstrap-time "top" top_env, as */ 1151 * reason for perl_run to return. We try to exit by jumping to the
638 /* we cannot restore the "main" coroutine as Coro has no such concept */ 1152 * bootstrap-time "top" top_env, as we cannot restore the "main"
1153 * coroutine as Coro has no such concept
1154 */
639 PL_top_env = main_top_env; 1155 PL_top_env = main_top_env;
640 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1156 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1157 }
641} 1158}
642 1159
643static coro_cctx * 1160static coro_cctx *
644cctx_new () 1161cctx_new ()
645{ 1162{
646 coro_cctx *cctx; 1163 coro_cctx *cctx;
1164
1165 ++cctx_count;
1166 New (0, cctx, 1, coro_cctx);
1167
1168 cctx->gen = cctx_gen;
1169 cctx->flags = 0;
1170 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1171
1172 return cctx;
1173}
1174
1175/* create a new cctx only suitable as source */
1176static coro_cctx *
1177cctx_new_empty ()
1178{
1179 coro_cctx *cctx = cctx_new ();
1180
1181 cctx->sptr = 0;
1182 coro_create (&cctx->cctx, 0, 0, 0, 0);
1183
1184 return cctx;
1185}
1186
1187/* create a new cctx suitable as destination/running a perl interpreter */
1188static coro_cctx *
1189cctx_new_run ()
1190{
1191 coro_cctx *cctx = cctx_new ();
647 void *stack_start; 1192 void *stack_start;
648 size_t stack_size; 1193 size_t stack_size;
649 1194
650 ++cctx_count;
651
652 Newz (0, cctx, 1, coro_cctx);
653
654#if HAVE_MMAP 1195#if HAVE_MMAP
655
656 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1196 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
657 /* mmap supposedly does allocate-on-write for us */ 1197 /* mmap supposedly does allocate-on-write for us */
658 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1198 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
659 1199
660 if (cctx->sptr != (void *)-1) 1200 if (cctx->sptr != (void *)-1)
661 { 1201 {
662# if CORO_STACKGUARD 1202 #if CORO_STACKGUARD
663 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1203 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
664# endif 1204 #endif
665 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1205 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
666 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1206 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
667 cctx->mapped = 1; 1207 cctx->flags |= CC_MAPPED;
668 } 1208 }
669 else 1209 else
670#endif 1210#endif
671 { 1211 {
672 cctx->ssize = coro_stacksize * (long)sizeof (long); 1212 cctx->ssize = cctx_stacksize * (long)sizeof (long);
673 New (0, cctx->sptr, coro_stacksize, long); 1213 New (0, cctx->sptr, cctx_stacksize, long);
674 1214
675 if (!cctx->sptr) 1215 if (!cctx->sptr)
676 { 1216 {
677 perror ("FATAL: unable to allocate stack for coroutine"); 1217 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
678 _exit (EXIT_FAILURE); 1218 _exit (EXIT_FAILURE);
679 } 1219 }
680 1220
681 stack_start = cctx->sptr; 1221 stack_start = cctx->sptr;
682 stack_size = cctx->ssize; 1222 stack_size = cctx->ssize;
683 } 1223 }
684 1224
685 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1225 #if CORO_USE_VALGRIND
1226 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1227 #endif
1228
686 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1229 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
687 1230
688 return cctx; 1231 return cctx;
689} 1232}
690 1233
691static void 1234static void
… …
693{ 1236{
694 if (!cctx) 1237 if (!cctx)
695 return; 1238 return;
696 1239
697 --cctx_count; 1240 --cctx_count;
1241 coro_destroy (&cctx->cctx);
698 1242
1243 /* coro_transfer creates new, empty cctx's */
1244 if (cctx->sptr)
1245 {
699#if CORO_USE_VALGRIND 1246 #if CORO_USE_VALGRIND
700 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1247 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
701#endif 1248 #endif
702 1249
703#if HAVE_MMAP 1250#if HAVE_MMAP
704 if (cctx->mapped) 1251 if (cctx->flags & CC_MAPPED)
705 munmap (cctx->sptr, cctx->ssize); 1252 munmap (cctx->sptr, cctx->ssize);
706 else 1253 else
707#endif 1254#endif
708 Safefree (cctx->sptr); 1255 Safefree (cctx->sptr);
1256 }
709 1257
710 Safefree (cctx); 1258 Safefree (cctx);
711} 1259}
1260
1261/* wether this cctx should be destructed */
1262#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
712 1263
713static coro_cctx * 1264static coro_cctx *
714cctx_get (pTHX) 1265cctx_get (pTHX)
715{ 1266{
716 while (cctx_first) 1267 while (expect_true (cctx_first))
717 { 1268 {
718 coro_cctx *cctx = cctx_first; 1269 coro_cctx *cctx = cctx_first;
719 cctx_first = cctx->next; 1270 cctx_first = cctx->next;
720 --cctx_idle; 1271 --cctx_idle;
721 1272
722 if (cctx->ssize >= coro_stacksize) 1273 if (expect_true (!CCTX_EXPIRED (cctx)))
723 return cctx; 1274 return cctx;
724 1275
725 cctx_destroy (cctx); 1276 cctx_destroy (cctx);
726 } 1277 }
727 1278
728 PL_op = PL_op->op_next;
729 return cctx_new (); 1279 return cctx_new_run ();
730} 1280}
731 1281
732static void 1282static void
733cctx_put (coro_cctx *cctx) 1283cctx_put (coro_cctx *cctx)
734{ 1284{
1285 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1286
735 /* free another cctx if overlimit */ 1287 /* free another cctx if overlimit */
736 if (cctx_idle >= MAX_IDLE_CCTX) 1288 if (expect_false (cctx_idle >= cctx_max_idle))
737 { 1289 {
738 coro_cctx *first = cctx_first; 1290 coro_cctx *first = cctx_first;
739 cctx_first = first->next; 1291 cctx_first = first->next;
740 --cctx_idle; 1292 --cctx_idle;
741 1293
742 assert (!first->inuse);
743 cctx_destroy (first); 1294 cctx_destroy (first);
744 } 1295 }
745 1296
746 ++cctx_idle; 1297 ++cctx_idle;
747 cctx->next = cctx_first; 1298 cctx->next = cctx_first;
748 cctx_first = cctx; 1299 cctx_first = cctx;
749} 1300}
750 1301
751/** coroutine switching *****************************************************/ 1302/** coroutine switching *****************************************************/
752 1303
753/* never call directly, always through the coro_state_transfer global variable */ 1304static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{
1307 if (expect_true (prev != next))
1308 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1311
1312 if (expect_false (next->flags & CF_RUNNING))
1313 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1314
1315 if (expect_false (next->flags & CF_DESTROYED))
1316 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1317
1318#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1320 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1321#endif
1322 }
1323}
1324
1325/* always use the TRANSFER macro */
754static void NOINLINE 1326static void NOINLINE
755transfer (pTHX_ struct coro *prev, struct coro *next) 1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
756{ 1328{
757 dSTACKLEVEL; 1329 dSTACKLEVEL;
758 1330
759 /* sometimes transfer is only called to set idle_sp */ 1331 /* sometimes transfer is only called to set idle_sp */
760 if (!next) 1332 if (expect_false (!next))
761 { 1333 {
762 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1334 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
763 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1335 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
764 } 1336 }
765 else if (prev != next) 1337 else if (expect_true (prev != next))
766 { 1338 {
767 coro_cctx *prev__cctx; 1339 coro_cctx *prev__cctx;
768 1340
769 if (prev->flags & CF_NEW) 1341 if (expect_false (prev->flags & CF_NEW))
770 { 1342 {
771 /* create a new empty context */ 1343 /* create a new empty/source context */
772 Newz (0, prev->cctx, 1, coro_cctx); 1344 prev->cctx = cctx_new_empty ();
773 prev->cctx->inuse = 1;
774 prev->flags &= ~CF_NEW; 1345 prev->flags &= ~CF_NEW;
775 prev->flags |= CF_RUNNING; 1346 prev->flags |= CF_RUNNING;
776 } 1347 }
777 1348
778 /*TODO: must not croak here */
779 if (!prev->flags & CF_RUNNING)
780 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
781
782 if (next->flags & CF_RUNNING)
783 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
784
785 if (next->flags & CF_DESTROYED)
786 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
787
788 prev->flags &= ~CF_RUNNING; 1349 prev->flags &= ~CF_RUNNING;
789 next->flags |= CF_RUNNING; 1350 next->flags |= CF_RUNNING;
790 1351
791 LOCK; 1352 LOCK;
792 1353
1354 /* first get rid of the old state */
1355 save_perl (aTHX_ prev);
1356
793 if (next->flags & CF_NEW) 1357 if (expect_false (next->flags & CF_NEW))
794 { 1358 {
795 /* need to start coroutine */ 1359 /* need to start coroutine */
796 next->flags &= ~CF_NEW; 1360 next->flags &= ~CF_NEW;
797 /* first get rid of the old state */
798 save_perl (aTHX_ prev);
799 /* setup coroutine call */ 1361 /* setup coroutine call */
800 setup_coro (aTHX_ next); 1362 coro_setup (aTHX_ next);
801 /* need a new stack */
802 assert (!next->cctx);
803 } 1363 }
804 else 1364 else
805 {
806 /* coroutine already started */
807 save_perl (aTHX_ prev);
808 load_perl (aTHX_ next); 1365 load_perl (aTHX_ next);
809 }
810 1366
811 prev__cctx = prev->cctx; 1367 prev__cctx = prev->cctx;
812 1368
813 /* possibly "free" the cctx */ 1369 /* possibly untie and reuse the cctx */
1370 if (expect_true (
814 if (prev__cctx->idle_sp == STACKLEVEL) 1371 prev__cctx->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE)
1373 && !force_cctx
1374 ))
815 { 1375 {
816 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1376 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
817 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1377 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
818 1378
819 prev->cctx = 0; 1379 prev->cctx = 0;
820 1380
1381 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1382 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1383 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1384 if (!next->cctx)
1385 next->cctx = cctx_get (aTHX);
1386
821 cctx_put (prev__cctx); 1387 cctx_put (prev__cctx);
822 prev__cctx->inuse = 0;
823 } 1388 }
824 1389
1390 ++next->usecount;
1391
825 if (!next->cctx) 1392 if (expect_true (!next->cctx))
826 {
827 next->cctx = cctx_get (aTHX); 1393 next->cctx = cctx_get (aTHX);
828 assert (!next->cctx->inuse);
829 next->cctx->inuse = 1;
830 }
831 1394
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1396 transfer_next = next;
1397
832 if (prev__cctx != next->cctx) 1398 if (expect_false (prev__cctx != next->cctx))
833 { 1399 {
834 prev__cctx->top_env = PL_top_env; 1400 prev__cctx->top_env = PL_top_env;
835 PL_top_env = next->cctx->top_env; 1401 PL_top_env = next->cctx->top_env;
836 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1402 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
837 } 1403 }
838 1404
839 free_coro_mortal (aTHX); 1405 transfer_tail (aTHX);
840 UNLOCK;
841 } 1406 }
842} 1407}
843 1408
844struct transfer_args 1409#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
845{
846 struct coro *prev, *next;
847};
848
849#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1410#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
850 1411
851/** high level stuff ********************************************************/ 1412/** high level stuff ********************************************************/
852 1413
853static int 1414static int
854coro_state_destroy (pTHX_ struct coro *coro) 1415coro_state_destroy (pTHX_ struct coro *coro)
… …
871 1432
872 if (coro->mainstack && coro->mainstack != main_mainstack) 1433 if (coro->mainstack && coro->mainstack != main_mainstack)
873 { 1434 {
874 struct coro temp; 1435 struct coro temp;
875 1436
876 assert (!(coro->flags & CF_RUNNING));
877
878 Zero (&temp, 1, struct coro);
879 temp.save = CORO_SAVE_DEF;
880
881 if (coro->flags & CF_RUNNING) 1437 if (coro->flags & CF_RUNNING)
882 croak ("FATAL: tried to destroy currently running coroutine"); 1438 croak ("FATAL: tried to destroy currently running coroutine");
883 1439
884 save_perl (aTHX_ &temp); 1440 save_perl (aTHX_ &temp);
885 load_perl (aTHX_ coro); 1441 load_perl (aTHX_ coro);
886 1442
887 coro_destroy_stacks (aTHX); 1443 coro_destruct (aTHX_ coro);
888 1444
889 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1445 load_perl (aTHX_ &temp);
890 1446
891 coro->mainstack = 0; 1447 coro->slot = 0;
892 } 1448 }
893 1449
894 cctx_destroy (coro->cctx); 1450 cctx_destroy (coro->cctx);
895 SvREFCNT_dec (coro->args); 1451 SvREFCNT_dec (coro->args);
896 1452
1453 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next;
1456
897 return 1; 1457 return 1;
898} 1458}
899 1459
900static int 1460static int
901coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1461coro_state_free (pTHX_ SV *sv, MAGIC *mg)
902{ 1462{
903 struct coro *coro = (struct coro *)mg->mg_ptr; 1463 struct coro *coro = (struct coro *)mg->mg_ptr;
904 mg->mg_ptr = 0; 1464 mg->mg_ptr = 0;
1465
1466 coro->hv = 0;
905 1467
906 if (--coro->refcnt < 0) 1468 if (--coro->refcnt < 0)
907 { 1469 {
908 coro_state_destroy (aTHX_ coro); 1470 coro_state_destroy (aTHX_ coro);
909 Safefree (coro); 1471 Safefree (coro);
… …
931#else 1493#else
932# define MGf_DUP 0 1494# define MGf_DUP 0
933#endif 1495#endif
934}; 1496};
935 1497
936static struct coro *
937SvSTATE_ (pTHX_ SV *coro)
938{
939 HV *stash;
940 MAGIC *mg;
941
942 if (SvROK (coro))
943 coro = SvRV (coro);
944
945 stash = SvSTASH (coro);
946 if (stash != coro_stash && stash != coro_state_stash)
947 {
948 /* very slow, but rare, check */
949 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
950 croak ("Coro::State object required");
951 }
952
953 mg = CORO_MAGIC (coro);
954 return (struct coro *)mg->mg_ptr;
955}
956
957#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
958
959static void 1498static void
960prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1499prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
961{ 1500{
962 ta->prev = SvSTATE (prev_sv); 1501 ta->prev = SvSTATE (prev_sv);
963 ta->next = SvSTATE (next_sv); 1502 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta);
964} 1504}
965 1505
966static void 1506static void
967api_transfer (SV *prev_sv, SV *next_sv) 1507api_transfer (SV *prev_sv, SV *next_sv)
968{ 1508{
969 dTHX; 1509 dTHX;
970 struct transfer_args ta; 1510 struct transfer_args ta;
971 1511
972 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
973 TRANSFER (ta); 1513 TRANSFER (ta, 1);
974}
975
976static int
977api_save (SV *coro_sv, int new_save)
978{
979 dTHX;
980 struct coro *coro = SvSTATE (coro_sv);
981 int old_save = coro->save;
982
983 if (new_save >= 0)
984 coro->save = new_save;
985
986 return old_save;
987} 1514}
988 1515
989/** Coro ********************************************************************/ 1516/** Coro ********************************************************************/
990 1517
991static void 1518static void
… …
993{ 1520{
994 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1521 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
995} 1522}
996 1523
997static SV * 1524static SV *
998coro_deq (pTHX_ int min_prio) 1525coro_deq (pTHX)
999{ 1526{
1000 int prio = PRIO_MAX - PRIO_MIN; 1527 int prio;
1001 1528
1002 min_prio -= PRIO_MIN;
1003 if (min_prio < 0)
1004 min_prio = 0;
1005
1006 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1007 if (AvFILLp (coro_ready [prio]) >= 0) 1530 if (AvFILLp (coro_ready [prio]) >= 0)
1008 return av_shift (coro_ready [prio]); 1531 return av_shift (coro_ready [prio]);
1009 1532
1010 return 0; 1533 return 0;
1011} 1534}
… …
1013static int 1536static int
1014api_ready (SV *coro_sv) 1537api_ready (SV *coro_sv)
1015{ 1538{
1016 dTHX; 1539 dTHX;
1017 struct coro *coro; 1540 struct coro *coro;
1541 SV *sv_hook;
1542 void (*xs_hook)(void);
1018 1543
1019 if (SvROK (coro_sv)) 1544 if (SvROK (coro_sv))
1020 coro_sv = SvRV (coro_sv); 1545 coro_sv = SvRV (coro_sv);
1021 1546
1022 coro = SvSTATE (coro_sv); 1547 coro = SvSTATE (coro_sv);
… …
1025 return 0; 1550 return 0;
1026 1551
1027 coro->flags |= CF_READY; 1552 coro->flags |= CF_READY;
1028 1553
1029 LOCK; 1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558
1030 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1031 ++coro_nready; 1560 ++coro_nready;
1561
1032 UNLOCK; 1562 UNLOCK;
1563
1564 if (sv_hook)
1565 {
1566 dSP;
1567
1568 ENTER;
1569 SAVETMPS;
1570
1571 PUSHMARK (SP);
1572 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD);
1574 SPAGAIN;
1575
1576 FREETMPS;
1577 LEAVE;
1578 }
1579
1580 if (xs_hook)
1581 xs_hook ();
1033 1582
1034 return 1; 1583 return 1;
1035} 1584}
1036 1585
1037static int 1586static int
1038api_is_ready (SV *coro_sv) 1587api_is_ready (SV *coro_sv)
1039{ 1588{
1040 dTHX; 1589 dTHX;
1590
1041 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1591 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1042} 1592}
1043 1593
1044static void 1594INLINE void
1045prepare_schedule (pTHX_ struct transfer_args *ta) 1595prepare_schedule (pTHX_ struct transfer_args *ta)
1046{ 1596{
1047 SV *prev_sv, *next_sv; 1597 SV *prev_sv, *next_sv;
1048 1598
1049 for (;;) 1599 for (;;)
1050 { 1600 {
1051 LOCK; 1601 LOCK;
1052 next_sv = coro_deq (aTHX_ PRIO_MIN); 1602 next_sv = coro_deq (aTHX);
1053 1603
1054 /* nothing to schedule: call the idle handler */ 1604 /* nothing to schedule: call the idle handler */
1055 if (!next_sv) 1605 if (expect_false (!next_sv))
1056 { 1606 {
1057 dSP; 1607 dSP;
1058 UNLOCK; 1608 UNLOCK;
1059 1609
1060 ENTER; 1610 ENTER;
1061 SAVETMPS; 1611 SAVETMPS;
1062 1612
1063 PUSHMARK (SP); 1613 PUSHMARK (SP);
1064 PUTBACK; 1614 PUTBACK;
1065 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1616 SPAGAIN;
1066 1617
1067 FREETMPS; 1618 FREETMPS;
1068 LEAVE; 1619 LEAVE;
1069 continue; 1620 continue;
1070 } 1621 }
1071 1622
1072 ta->next = SvSTATE (next_sv); 1623 ta->next = SvSTATE (next_sv);
1073 1624
1074 /* cannot transfer to destroyed coros, skip and look for next */ 1625 /* cannot transfer to destroyed coros, skip and look for next */
1075 if (ta->next->flags & CF_DESTROYED) 1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1076 { 1627 {
1077 UNLOCK; 1628 UNLOCK;
1078 SvREFCNT_dec (next_sv); 1629 SvREFCNT_dec (next_sv);
1079 /* coro_nready is already taken care of by destroy */ 1630 /* coro_nready has already been taken care of by destroy */
1080 continue; 1631 continue;
1081 } 1632 }
1082 1633
1083 --coro_nready; 1634 --coro_nready;
1084 UNLOCK; 1635 UNLOCK;
1085 break; 1636 break;
1086 } 1637 }
1087 1638
1088 /* free this only after the transfer */ 1639 /* free this only after the transfer */
1089 prev_sv = SvRV (coro_current); 1640 prev_sv = SvRV (coro_current);
1641 ta->prev = SvSTATE (prev_sv);
1642 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1644 ta->next->flags &= ~CF_READY;
1090 SvRV_set (coro_current, next_sv); 1645 SvRV_set (coro_current, next_sv);
1091 ta->prev = SvSTATE (prev_sv);
1092
1093 assert (ta->next->flags & CF_READY);
1094 ta->next->flags &= ~CF_READY;
1095 1646
1096 LOCK; 1647 LOCK;
1097 free_coro_mortal (aTHX); 1648 free_coro_mortal (aTHX);
1098 coro_mortal = prev_sv; 1649 coro_mortal = prev_sv;
1099 UNLOCK; 1650 UNLOCK;
1100} 1651}
1101 1652
1102static void 1653INLINE void
1103prepare_cede (pTHX_ struct transfer_args *ta) 1654prepare_cede (pTHX_ struct transfer_args *ta)
1104{ 1655{
1105 api_ready (coro_current); 1656 api_ready (coro_current);
1106 prepare_schedule (aTHX_ ta); 1657 prepare_schedule (aTHX_ ta);
1107} 1658}
… …
1125{ 1676{
1126 dTHX; 1677 dTHX;
1127 struct transfer_args ta; 1678 struct transfer_args ta;
1128 1679
1129 prepare_schedule (aTHX_ &ta); 1680 prepare_schedule (aTHX_ &ta);
1130 TRANSFER (ta); 1681 TRANSFER (ta, 1);
1131} 1682}
1132 1683
1133static int 1684static int
1134api_cede (void) 1685api_cede (void)
1135{ 1686{
1136 dTHX; 1687 dTHX;
1137 struct transfer_args ta; 1688 struct transfer_args ta;
1138 1689
1139 prepare_cede (aTHX_ &ta); 1690 prepare_cede (aTHX_ &ta);
1140 1691
1141 if (ta.prev != ta.next) 1692 if (expect_true (ta.prev != ta.next))
1142 { 1693 {
1143 TRANSFER (ta); 1694 TRANSFER (ta, 1);
1144 return 1; 1695 return 1;
1145 } 1696 }
1146 else 1697 else
1147 return 0; 1698 return 0;
1148} 1699}
… …
1153 dTHX; 1704 dTHX;
1154 struct transfer_args ta; 1705 struct transfer_args ta;
1155 1706
1156 if (prepare_cede_notself (aTHX_ &ta)) 1707 if (prepare_cede_notself (aTHX_ &ta))
1157 { 1708 {
1158 TRANSFER (ta); 1709 TRANSFER (ta, 1);
1159 return 1; 1710 return 1;
1160 } 1711 }
1161 else 1712 else
1162 return 0; 1713 return 0;
1163} 1714}
1164 1715
1716static void
1717api_trace (SV *coro_sv, int flags)
1718{
1719 dTHX;
1720 struct coro *coro = SvSTATE (coro_sv);
1721
1722 if (flags & CC_TRACE)
1723 {
1724 if (!coro->cctx)
1725 coro->cctx = cctx_new_run ();
1726 else if (!(coro->cctx->flags & CC_TRACE))
1727 croak ("cannot enable tracing on coroutine with custom stack");
1728
1729 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1730 }
1731 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1732 {
1733 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1734
1735 if (coro->flags & CF_RUNNING)
1736 PL_runops = RUNOPS_DEFAULT;
1737 else
1738 coro->slot->runops = RUNOPS_DEFAULT;
1739 }
1740}
1741
1742#if 0
1743static int
1744coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1745{
1746 AV *padlist;
1747 AV *av = (AV *)mg->mg_obj;
1748
1749 abort ();
1750
1751 return 0;
1752}
1753
1754static MGVTBL coro_gensub_vtbl = {
1755 0, 0, 0, 0,
1756 coro_gensub_free
1757};
1758#endif
1759
1760/*****************************************************************************/
1761/* PerlIO::cede */
1762
1763typedef struct
1764{
1765 PerlIOBuf base;
1766 NV next, every;
1767} PerlIOCede;
1768
1769static IV
1770PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1771{
1772 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1773
1774 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1775 self->next = nvtime () + self->every;
1776
1777 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1778}
1779
1780static SV *
1781PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1782{
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784
1785 return newSVnv (self->every);
1786}
1787
1788static IV
1789PerlIOCede_flush (pTHX_ PerlIO *f)
1790{
1791 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1792 double now = nvtime ();
1793
1794 if (now >= self->next)
1795 {
1796 api_cede ();
1797 self->next = now + self->every;
1798 }
1799
1800 return PerlIOBuf_flush (aTHX_ f);
1801}
1802
1803static PerlIO_funcs PerlIO_cede =
1804{
1805 sizeof(PerlIO_funcs),
1806 "cede",
1807 sizeof(PerlIOCede),
1808 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1809 PerlIOCede_pushed,
1810 PerlIOBuf_popped,
1811 PerlIOBuf_open,
1812 PerlIOBase_binmode,
1813 PerlIOCede_getarg,
1814 PerlIOBase_fileno,
1815 PerlIOBuf_dup,
1816 PerlIOBuf_read,
1817 PerlIOBuf_unread,
1818 PerlIOBuf_write,
1819 PerlIOBuf_seek,
1820 PerlIOBuf_tell,
1821 PerlIOBuf_close,
1822 PerlIOCede_flush,
1823 PerlIOBuf_fill,
1824 PerlIOBase_eof,
1825 PerlIOBase_error,
1826 PerlIOBase_clearerr,
1827 PerlIOBase_setlinebuf,
1828 PerlIOBuf_get_base,
1829 PerlIOBuf_bufsiz,
1830 PerlIOBuf_get_ptr,
1831 PerlIOBuf_get_cnt,
1832 PerlIOBuf_set_ptrcnt,
1833};
1834
1835/*****************************************************************************/
1836
1837static const CV *ssl_cv; /* for quick consistency check */
1838
1839static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1840static SV *ssl_arg0;
1841static SV *ssl_arg1;
1842
1843/* this restores the stack in the case we patched the entersub, to */
1844/* recreate the stack frame as perl will on following calls */
1845/* since entersub cleared the stack */
1846static OP *
1847pp_restore (pTHX)
1848{
1849 dSP;
1850
1851 PUSHMARK (SP);
1852
1853 EXTEND (SP, 3);
1854 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
1855 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1856 PUSHs ((SV *)CvGV (ssl_cv));
1857
1858 RETURNOP (ssl_restore.op_first);
1859}
1860
1861/* declare prototype */
1862XS(XS_Coro__State__set_stacklevel);
1863
1864#define OPpENTERSUB_SSL 15
1865
1866static OP *
1867pp_set_stacklevel (pTHX)
1868{
1869 dSP;
1870 struct transfer_args ta;
1871 SV **arg = PL_stack_base + TOPMARK + 1;
1872 int items = SP - arg; /* args without function object */
1873
1874 /* do a quick consistency check on the "function" object, and if it isn't */
1875 /* for us, divert to the real entersub */
1876 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1877 return PL_ppaddr[OP_ENTERSUB](aTHX);
1878
1879 /* pop args */
1880 SP = PL_stack_base + POPMARK;
1881
1882 if (!(PL_op->op_flags & OPf_STACKED))
1883 {
1884 /* ampersand-form of call, use @_ instead of stack */
1885 AV *av = GvAV (PL_defgv);
1886 arg = AvARRAY (av);
1887 items = AvFILLp (av) + 1;
1888 }
1889
1890 PUTBACK;
1891 switch (PL_op->op_private & OPpENTERSUB_SSL)
1892 {
1893 case 0:
1894 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1895 break;
1896
1897 case 1:
1898 if (items != 2)
1899 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1900
1901 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1902 break;
1903
1904 case 2:
1905 prepare_schedule (aTHX_ &ta);
1906 break;
1907
1908 case 3:
1909 prepare_cede (aTHX_ &ta);
1910 break;
1911
1912 case 4:
1913 if (!prepare_cede_notself (aTHX_ &ta))
1914 goto skip;
1915
1916 break;
1917 }
1918
1919 TRANSFER (ta, 0);
1920 SPAGAIN;
1921
1922skip:
1923 PUTBACK;
1924 SSL_TAIL;
1925 SPAGAIN;
1926 RETURN;
1927}
1928
1165MODULE = Coro::State PACKAGE = Coro::State 1929MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1166 1930
1167PROTOTYPES: DISABLE 1931PROTOTYPES: DISABLE
1168 1932
1169BOOT: 1933# these not obviously related functions are all rolled into the same xs
1170{ 1934# function to increase chances that they all will call transfer with the same
1171#ifdef USE_ITHREADS 1935# stack offset
1172 MUTEX_INIT (&coro_mutex);
1173#endif
1174 BOOT_PAGESIZE;
1175
1176 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1177
1178 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1179 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1180 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1181 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1182 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1183 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1184 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1185
1186 main_mainstack = PL_mainstack;
1187 main_top_env = PL_top_env;
1188
1189 while (main_top_env->je_prev)
1190 main_top_env = main_top_env->je_prev;
1191
1192 coroapi.ver = CORO_API_VERSION;
1193 coroapi.transfer = api_transfer;
1194
1195 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1196}
1197
1198SV *
1199new (char *klass, ...)
1200 CODE:
1201{
1202 struct coro *coro;
1203 HV *hv;
1204 int i;
1205
1206 Newz (0, coro, 1, struct coro);
1207 coro->args = newAV ();
1208 coro->save = CORO_SAVE_DEF;
1209 coro->flags = CF_NEW;
1210
1211 hv = newHV ();
1212 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1213 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1214
1215 for (i = 1; i < items; i++)
1216 av_push (coro->args, newSVsv (ST (i)));
1217}
1218 OUTPUT:
1219 RETVAL
1220
1221int
1222save (SV *coro, int new_save = -1)
1223 CODE:
1224 RETVAL = api_save (coro, new_save);
1225 OUTPUT:
1226 RETVAL
1227
1228int
1229save_also (SV *coro_sv, int save_also)
1230 CODE:
1231{
1232 struct coro *coro = SvSTATE (coro_sv);
1233 RETVAL = coro->save;
1234 coro->save |= save_also;
1235}
1236 OUTPUT:
1237 RETVAL
1238
1239void 1936void
1240_set_stacklevel (...) 1937_set_stacklevel (...)
1241 ALIAS: 1938 ALIAS:
1242 Coro::State::transfer = 1 1939 Coro::State::transfer = 1
1243 Coro::schedule = 2 1940 Coro::schedule = 2
1244 Coro::cede = 3 1941 Coro::cede = 3
1245 Coro::cede_notself = 4 1942 Coro::cede_notself = 4
1246 CODE: 1943 CODE:
1247{ 1944{
1248 struct transfer_args ta; 1945 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1249 1946
1250 switch (ix) 1947 assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1948 ssl_cv = cv;
1949
1950 /* we patch the op, and then re-run the whole call */
1951 /* we have to put some dummy argument on the stack for this to work */
1952 ssl_restore.op_next = (OP *)&ssl_restore;
1953 ssl_restore.op_type = OP_NULL;
1954 ssl_restore.op_ppaddr = pp_restore;
1955 ssl_restore.op_first = PL_op;
1956
1957 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1958 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1959
1960 PL_op->op_ppaddr = pp_set_stacklevel;
1961 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1962
1963 PL_op = (OP *)&ssl_restore;
1964}
1965
1966BOOT:
1967{
1968#ifdef USE_ITHREADS
1969 MUTEX_INIT (&coro_lock);
1970# if CORO_PTHREAD
1971 coro_thx = PERL_GET_CONTEXT;
1972# endif
1973#endif
1974 BOOT_PAGESIZE;
1975
1976 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1977 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1978
1979 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1980 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1981 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1982
1983 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1984 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1985 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1986
1987 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1988
1989 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1990 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1991 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1992 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1993
1994 main_mainstack = PL_mainstack;
1995 main_top_env = PL_top_env;
1996
1997 while (main_top_env->je_prev)
1998 main_top_env = main_top_env->je_prev;
1999
2000 coroapi.ver = CORO_API_VERSION;
2001 coroapi.rev = CORO_API_REVISION;
2002 coroapi.transfer = api_transfer;
2003
1251 { 2004 {
1252 case 0: 2005 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1253 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1254 ta.next = 0;
1255 break;
1256 2006
1257 case 1: 2007 if (!svp) croak ("Time::HiRes is required");
1258 if (items != 2) 2008 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1259 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1260 2009
1261 prepare_transfer (aTHX_ &ta, ST (0), ST (1)); 2010 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1262 break;
1263
1264 case 2:
1265 prepare_schedule (aTHX_ &ta);
1266 break;
1267
1268 case 3:
1269 prepare_cede (aTHX_ &ta);
1270 break;
1271
1272 case 4:
1273 if (!prepare_cede_notself (aTHX_ &ta))
1274 XSRETURN_EMPTY;
1275
1276 break;
1277 } 2011 }
1278 2012
1279 BARRIER; 2013 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1280 TRANSFER (ta);
1281
1282 if (GIMME_V != G_VOID && ta.next != ta.prev)
1283 XSRETURN_YES;
1284} 2014}
2015
2016SV *
2017new (char *klass, ...)
2018 CODE:
2019{
2020 struct coro *coro;
2021 MAGIC *mg;
2022 HV *hv;
2023 int i;
2024
2025 Newz (0, coro, 1, struct coro);
2026 coro->args = newAV ();
2027 coro->flags = CF_NEW;
2028
2029 if (coro_first) coro_first->prev = coro;
2030 coro->next = coro_first;
2031 coro_first = coro;
2032
2033 coro->hv = hv = newHV ();
2034 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2035 mg->mg_flags |= MGf_DUP;
2036 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2037
2038 av_extend (coro->args, items - 1);
2039 for (i = 1; i < items; i++)
2040 av_push (coro->args, newSVsv (ST (i)));
2041}
2042 OUTPUT:
2043 RETVAL
1285 2044
1286bool 2045bool
1287_destroy (SV *coro_sv) 2046_destroy (SV *coro_sv)
1288 CODE: 2047 CODE:
1289 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2048 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1290 OUTPUT: 2049 OUTPUT:
1291 RETVAL 2050 RETVAL
1292 2051
1293void 2052void
1294_exit (code) 2053_exit (int code)
1295 int code
1296 PROTOTYPE: $ 2054 PROTOTYPE: $
1297 CODE: 2055 CODE:
1298 _exit (code); 2056 _exit (code);
1299 2057
1300int 2058int
1301cctx_stacksize (int new_stacksize = 0) 2059cctx_stacksize (int new_stacksize = 0)
1302 CODE: 2060 CODE:
1303 RETVAL = coro_stacksize; 2061 RETVAL = cctx_stacksize;
1304 if (new_stacksize) 2062 if (new_stacksize)
2063 {
1305 coro_stacksize = new_stacksize; 2064 cctx_stacksize = new_stacksize;
2065 ++cctx_gen;
2066 }
2067 OUTPUT:
2068 RETVAL
2069
2070int
2071cctx_max_idle (int max_idle = 0)
2072 CODE:
2073 RETVAL = cctx_max_idle;
2074 if (max_idle > 1)
2075 cctx_max_idle = max_idle;
1306 OUTPUT: 2076 OUTPUT:
1307 RETVAL 2077 RETVAL
1308 2078
1309int 2079int
1310cctx_count () 2080cctx_count ()
… …
1318 CODE: 2088 CODE:
1319 RETVAL = cctx_idle; 2089 RETVAL = cctx_idle;
1320 OUTPUT: 2090 OUTPUT:
1321 RETVAL 2091 RETVAL
1322 2092
2093void
2094list ()
2095 PPCODE:
2096{
2097 struct coro *coro;
2098 for (coro = coro_first; coro; coro = coro->next)
2099 if (coro->hv)
2100 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2101}
2102
2103void
2104call (Coro::State coro, SV *coderef)
2105 ALIAS:
2106 eval = 1
2107 CODE:
2108{
2109 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2110 {
2111 struct coro temp;
2112
2113 if (!(coro->flags & CF_RUNNING))
2114 {
2115 PUTBACK;
2116 save_perl (aTHX_ &temp);
2117 load_perl (aTHX_ coro);
2118 }
2119
2120 {
2121 dSP;
2122 ENTER;
2123 SAVETMPS;
2124 PUTBACK;
2125 PUSHSTACK;
2126 PUSHMARK (SP);
2127
2128 if (ix)
2129 eval_sv (coderef, 0);
2130 else
2131 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2132
2133 POPSTACK;
2134 SPAGAIN;
2135 FREETMPS;
2136 LEAVE;
2137 PUTBACK;
2138 }
2139
2140 if (!(coro->flags & CF_RUNNING))
2141 {
2142 save_perl (aTHX_ coro);
2143 load_perl (aTHX_ &temp);
2144 SPAGAIN;
2145 }
2146 }
2147}
2148
2149SV *
2150is_ready (Coro::State coro)
2151 PROTOTYPE: $
2152 ALIAS:
2153 is_ready = CF_READY
2154 is_running = CF_RUNNING
2155 is_new = CF_NEW
2156 is_destroyed = CF_DESTROYED
2157 CODE:
2158 RETVAL = boolSV (coro->flags & ix);
2159 OUTPUT:
2160 RETVAL
2161
2162void
2163throw (Coro::State self, SV *throw = &PL_sv_undef)
2164 PROTOTYPE: $;$
2165 CODE:
2166 SvREFCNT_dec (self->throw);
2167 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2168
2169void
2170api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2171
2172SV *
2173has_cctx (Coro::State coro)
2174 PROTOTYPE: $
2175 CODE:
2176 RETVAL = boolSV (!!coro->cctx);
2177 OUTPUT:
2178 RETVAL
2179
2180int
2181is_traced (Coro::State coro)
2182 PROTOTYPE: $
2183 CODE:
2184 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2185 OUTPUT:
2186 RETVAL
2187
2188UV
2189rss (Coro::State coro)
2190 PROTOTYPE: $
2191 ALIAS:
2192 usecount = 1
2193 CODE:
2194 switch (ix)
2195 {
2196 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2197 case 1: RETVAL = coro->usecount; break;
2198 }
2199 OUTPUT:
2200 RETVAL
2201
2202void
2203force_cctx ()
2204 CODE:
2205 struct coro *coro = SvSTATE (coro_current);
2206 coro->cctx->idle_sp = 0;
2207
2208void
2209swap_defsv (Coro::State self)
2210 PROTOTYPE: $
2211 ALIAS:
2212 swap_defav = 1
2213 CODE:
2214 if (!self->slot)
2215 croak ("cannot swap state with coroutine that has no saved state");
2216 else
2217 {
2218 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2219 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2220
2221 SV *tmp = *src; *src = *dst; *dst = tmp;
2222 }
2223
1323MODULE = Coro::State PACKAGE = Coro 2224MODULE = Coro::State PACKAGE = Coro
1324 2225
1325BOOT: 2226BOOT:
1326{ 2227{
1327 int i; 2228 int i;
1328 2229
2230 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2231 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2232 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2233
2234 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2235 SvREADONLY_on (coro_current);
2236
1329 coro_stash = gv_stashpv ("Coro", TRUE); 2237 coro_stash = gv_stashpv ("Coro", TRUE);
1330 2238
1331 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2239 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1332 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2240 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1333 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2241 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1334 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2242 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1335 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2243 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1336 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2244 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1337 2245
1338 coro_current = get_sv ("Coro::current", FALSE);
1339 SvREADONLY_on (coro_current);
1340
1341 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2246 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1342 coro_ready[i] = newAV (); 2247 coro_ready[i] = newAV ();
1343 2248
1344 { 2249 {
1345 SV *sv = perl_get_sv("Coro::API", 1); 2250 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1346 2251
1347 coroapi.schedule = api_schedule; 2252 coroapi.schedule = api_schedule;
1348 coroapi.save = api_save;
1349 coroapi.cede = api_cede; 2253 coroapi.cede = api_cede;
1350 coroapi.cede_notself = api_cede_notself; 2254 coroapi.cede_notself = api_cede_notself;
1351 coroapi.ready = api_ready; 2255 coroapi.ready = api_ready;
1352 coroapi.is_ready = api_is_ready; 2256 coroapi.is_ready = api_is_ready;
1353 coroapi.nready = &coro_nready; 2257 coroapi.nready = &coro_nready;
… …
1362void 2266void
1363_set_current (SV *current) 2267_set_current (SV *current)
1364 PROTOTYPE: $ 2268 PROTOTYPE: $
1365 CODE: 2269 CODE:
1366 SvREFCNT_dec (SvRV (coro_current)); 2270 SvREFCNT_dec (SvRV (coro_current));
1367 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2271 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2272
2273void
2274_set_readyhook (SV *hook)
2275 PROTOTYPE: $
2276 CODE:
2277 LOCK;
2278 SvREFCNT_dec (coro_readyhook);
2279 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2280 UNLOCK;
1368 2281
1369int 2282int
1370prio (Coro::State coro, int newprio = 0) 2283prio (Coro::State coro, int newprio = 0)
1371 ALIAS: 2284 ALIAS:
1372 nice = 1 2285 nice = 1
… …
1394 CODE: 2307 CODE:
1395 RETVAL = boolSV (api_ready (self)); 2308 RETVAL = boolSV (api_ready (self));
1396 OUTPUT: 2309 OUTPUT:
1397 RETVAL 2310 RETVAL
1398 2311
1399SV *
1400is_ready (SV *self)
1401 PROTOTYPE: $
1402 CODE:
1403 RETVAL = boolSV (api_is_ready (self));
1404 OUTPUT:
1405 RETVAL
1406
1407int 2312int
1408nready (...) 2313nready (...)
1409 PROTOTYPE: 2314 PROTOTYPE:
1410 CODE: 2315 CODE:
1411 RETVAL = coro_nready; 2316 RETVAL = coro_nready;
1412 OUTPUT: 2317 OUTPUT:
1413 RETVAL 2318 RETVAL
1414 2319
2320# for async_pool speedup
2321void
2322_pool_1 (SV *cb)
2323 CODE:
2324{
2325 struct coro *coro = SvSTATE (coro_current);
2326 HV *hv = (HV *)SvRV (coro_current);
2327 AV *defav = GvAV (PL_defgv);
2328 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2329 AV *invoke_av;
2330 int i, len;
2331
2332 if (!invoke)
2333 {
2334 SV *old = PL_diehook;
2335 PL_diehook = 0;
2336 SvREFCNT_dec (old);
2337 croak ("\3async_pool terminate\2\n");
2338 }
2339
2340 SvREFCNT_dec (coro->saved_deffh);
2341 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2342
2343 hv_store (hv, "desc", sizeof ("desc") - 1,
2344 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2345
2346 invoke_av = (AV *)SvRV (invoke);
2347 len = av_len (invoke_av);
2348
2349 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2350
2351 if (len > 0)
2352 {
2353 av_fill (defav, len - 1);
2354 for (i = 0; i < len; ++i)
2355 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2356 }
2357
2358 SvREFCNT_dec (invoke);
2359}
2360
2361void
2362_pool_2 (SV *cb)
2363 CODE:
2364{
2365 struct coro *coro = SvSTATE (coro_current);
2366
2367 sv_setsv (cb, &PL_sv_undef);
2368
2369 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2370 coro->saved_deffh = 0;
2371
2372 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2373 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2374 {
2375 SV *old = PL_diehook;
2376 PL_diehook = 0;
2377 SvREFCNT_dec (old);
2378 croak ("\3async_pool terminate\2\n");
2379 }
2380
2381 av_clear (GvAV (PL_defgv));
2382 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2383 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2384
2385 coro->prio = 0;
2386
2387 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2388 api_trace (coro_current, 0);
2389
2390 av_push (av_async_pool, newSVsv (coro_current));
2391}
2392
2393#if 0
2394
2395void
2396_generator_call (...)
2397 PROTOTYPE: @
2398 PPCODE:
2399 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2400 xxxx
2401 abort ();
2402
2403SV *
2404gensub (SV *sub, ...)
2405 PROTOTYPE: &;@
2406 CODE:
2407{
2408 struct coro *coro;
2409 MAGIC *mg;
2410 CV *xcv;
2411 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2412 int i;
2413
2414 CvGV (ncv) = CvGV (cv);
2415 CvFILE (ncv) = CvFILE (cv);
2416
2417 Newz (0, coro, 1, struct coro);
2418 coro->args = newAV ();
2419 coro->flags = CF_NEW;
2420
2421 av_extend (coro->args, items - 1);
2422 for (i = 1; i < items; i++)
2423 av_push (coro->args, newSVsv (ST (i)));
2424
2425 CvISXSUB_on (ncv);
2426 CvXSUBANY (ncv).any_ptr = (void *)coro;
2427
2428 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2429
2430 CvXSUB (ncv) = CvXSUB (xcv);
2431 CvANON_on (ncv);
2432
2433 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2434 RETVAL = newRV_noinc ((SV *)ncv);
2435}
2436 OUTPUT:
2437 RETVAL
2438
2439#endif
2440
2441
1415MODULE = Coro::State PACKAGE = Coro::AIO 2442MODULE = Coro::State PACKAGE = Coro::AIO
1416 2443
1417SV * 2444void
1418_get_state () 2445_get_state (SV *self)
1419 CODE: 2446 PPCODE:
1420{ 2447{
1421 struct io_state *data; 2448 AV *defav = GvAV (PL_defgv);
1422 2449 AV *av = newAV ();
2450 int i;
1423 RETVAL = newSV (sizeof (struct io_state)); 2451 SV *data_sv = newSV (sizeof (struct io_state));
1424 data = (struct io_state *)SvPVX (RETVAL); 2452 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1425 SvCUR_set (RETVAL, sizeof (struct io_state)); 2453 SvCUR_set (data_sv, sizeof (struct io_state));
1426 SvPOK_only (RETVAL); 2454 SvPOK_only (data_sv);
1427 2455
1428 data->errorno = errno; 2456 data->errorno = errno;
1429 data->laststype = PL_laststype; 2457 data->laststype = PL_laststype;
1430 data->laststatval = PL_laststatval; 2458 data->laststatval = PL_laststatval;
1431 data->statcache = PL_statcache; 2459 data->statcache = PL_statcache;
2460
2461 av_extend (av, AvFILLp (defav) + 1 + 1);
2462
2463 for (i = 0; i <= AvFILLp (defav); ++i)
2464 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2465
2466 av_push (av, data_sv);
2467
2468 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2469
2470 api_ready (self);
1432} 2471}
1433 OUTPUT:
1434 RETVAL
1435 2472
1436void 2473void
1437_set_state (char *data_) 2474_set_state (SV *state)
1438 PROTOTYPE: $ 2475 PROTOTYPE: $
1439 CODE: 2476 PPCODE:
1440{ 2477{
1441 struct io_state *data = (void *)data_; 2478 AV *av = (AV *)SvRV (state);
2479 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2480 int i;
1442 2481
1443 errno = data->errorno; 2482 errno = data->errorno;
1444 PL_laststype = data->laststype; 2483 PL_laststype = data->laststype;
1445 PL_laststatval = data->laststatval; 2484 PL_laststatval = data->laststatval;
1446 PL_statcache = data->statcache; 2485 PL_statcache = data->statcache;
1447}
1448 2486
2487 EXTEND (SP, AvFILLp (av));
2488 for (i = 0; i < AvFILLp (av); ++i)
2489 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2490}
2491
2492
2493MODULE = Coro::State PACKAGE = Coro::AnyEvent
2494
2495BOOT:
2496 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2497
2498SV *
2499_schedule (...)
2500 PROTOTYPE: @
2501 CODE:
2502{
2503 static int incede;
2504
2505 api_cede_notself ();
2506
2507 ++incede;
2508 while (coro_nready >= incede && api_cede ())
2509 ;
2510
2511 sv_setsv (sv_activity, &PL_sv_undef);
2512 if (coro_nready >= incede)
2513 {
2514 PUSHMARK (SP);
2515 PUTBACK;
2516 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2517 SPAGAIN;
2518 }
2519
2520 --incede;
2521}
2522
2523
2524MODULE = Coro::State PACKAGE = PerlIO::cede
2525
2526BOOT:
2527 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2528

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines